OCR

OCR全称为"Oracle Cluster Registry"，字面意思为Oracle集群注册表。Oracle官方文档上的描述为:Anything that Oracle Clusterware manages is known as a CRS resource. A CRSresource can be a database, an instance, a service, a listener, a VIP address, or an application process. Oracle Clusterware manages CRS resources based on the resource's configuration information that is stored in the Oracle Cluster Registry (OCR).